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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 INTERNET THREAT UPDATE for 03-21-2002 ISS X-Force Internet Threat Intelligence Center www.iss.net - Click on AlertCon logo for more information. ******************************************** ALERTCON 1 Projected: AlertCon 1 ******************************************** ALERTCON 1 - AlertCon 1 reflects the malicious, determined, global, 24 x 7 attacks experienced by all networks. VM: An updated version of a patch released previously for Microsoft's Virtual Machine is now available. Two flaws in the VM include how Java requests for proxy resources are handled and the security checks on casting operations within the VM. zlib: Sources have indicated that the scope of this vulnerability reaches out to more system applications than first anticipated. In addition to Linux and Microsoft, it is now being reported that Netscape Navigator, PGP, and Symantec's Norton Antivirus may also be affected. VIRUSES/WORMS: WORM_SHREW.A - This Internet worm, created in Visual Basic, uses Microsoft Outlook to propagate copies of itself via email to the email recipients listed on the infected user's Windows Address Book (WAB). ******************************************** RECOMMENDATIONS ******************************************** For the Microsoft bulletin, please refer to: <http://www.microsoft.com/technet/treeview/default.asp?url=/technet/se curity/bulletin/MS02-013.asp> For the zlib patch and further clarification, please see: http://www.gzip.org/zlib For information on the WORM_SHREW.A, please see: <http://www.antivirus.com/vinfo/virusencyclo/default5.asp?VName=WORM_S HREW.A> Information regarding viruses and worms please see: <https://gtoc.iss.net/viruses.php> ******************************************** ATTACK SIGNATURE RANKING - global IDS, midnight - midnight, previous Day, % of total ******************************************** Protocol Decode 42.09% Suspicious Activity 20.92% Denial Of Service 17.04% Unauthorized Access Attempt 15.08% Pre-Attack Probe 04.81% Back Door 00.05% ******************************************** TOP TEN ATTACK DESTINATION PORTS - global IDS, midnight - midnight, previous day, % of top ten (ports found at) http://www.networkice.com/Advice/Exploits/Ports/default.htm ******************************************** 80 (http) 58.40% 161 (SNMP) 18.51% 139 (NetBIOS) 07.36% 162 (SNMPTrap) 05.74% 25 (smtp) 03.10% 21 (ftp) 02.82% 22 (ssh) 01.40% 1500 (vlsi-lm) 01.06% 443 (ssl) 01.02% 23 (telnet) 00.58% ******************************************** BACKGROUND, COPYRIGHT NOTICE, and DISCLAIMER ******************************************** Background. We provide this information in the spirit of PDD 63 to help security professionals wage the war against Internet threats more effectively. Information in this update derived primarily from global, real time, 24 x 7 IDS feeds, ISS X-Force R&D Team research, and professional liaison. Other sources as noted. AlertCon 1 reflects the global, malicious, determined, 24 x 7 attacks experienced by all networks. AlertCon 2 means increased vigilance/action recommended due to a specific threat or concern. AlertCon 3 means increased attacks against specific targets or vulnerabilities on a scale that is unusually high, action required. AlertCon 4 reflects an Internet emergency for a target or group of targets whose business continuity may depend on some sort of immediate, decisive action. All summaries cover 24 hours the previous workday, GMT. Monday summaries may cover some weekend activity. Copyright 2001 Internet Security Systems, Inc. Permission is granted for the redistribution of the Internet Threat Update electronically. It is not to be sold or edited in any way without express consent of ISS. Refer comments or questions to: [EMAIL PROTECTED] or [EMAIL PROTECTED] Disclaimer: This information is subject to change without notice. Use of this information constitutes acceptance for use in an 'as is' condition. There are no warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. No other use authorized. FOIA Exemption 4. You can download the public key from MIT's PGP key server and PGP.com's key server. Patrick Gray Manager, X-Force Internet Threat Intelligence Center Internet Security Systems 6303 Barfield Road Atlanta, GA 30328 -----BEGIN PGP SIGNATURE----- Version: PGP 7.0 iQA/AwUBPJoT1pG41ROSQPncEQI5bgCfTVMaCaS6P05N3EaXdgEdxVGu24kAnik7 GdkIUUjCLVxrUuVgWlxqv4iL =IDJ2 -----END PGP SIGNATURE-----
